Algebra 1 2nd Semester Exam

Mathematical Equivalence

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Mathematical Equivalence

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Mathematical Equivalence

ON

Which of the following functions shows an initial amount of $20 and an increase of 22% each year?

• y = 20(22)^x

• y = 20(1.22)^x

• y = 22(0.20)^x

• y = 22(1.20)^x

Classify the model as Exponential GROWTH or DECAY.
A=120(1.03)⁶

• Growth
• Decay

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None

Suppose a culture of bacteria begins with 500 cells and dies by 11% each year. Write an equation that represents this situation.

• y = 500(0.89)

• y = 11(500)^x

• y = 500(11)^x

• y = 500x^x

Mathematical Equivalence

OFF

What kind of sequence is illustrated below?
 400, 200, 100, 50, 25, ...

• Arithmetic
• Geometric
• Neither